Publications by authors named "Ranjith Karthekeyan"

Objective: Regional analgesia, along with general anesthesia, reduce postoperative pain. In this study, the authors compared the erector spinae plane (ESP) block having dexmedetomidine as an adjuvant with conventional pain management along with intravenous dexmedetomidine.

Design: Prospective randomized single-blinded trial.

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Background And Aims: Lower extremity amputation (LEA) is a commonly performed surgery and is associated with significant mortality and morbidity. This review compares the impact of anaesthetic technique on 30-day mortality and other perioperative outcomes in patients undergoing LEA.

Methods: A systematic search of databases including PubMed, Embase, Scopus and Cochrane Central Register of Controlled Trials, from January 2010 to March 2021, was performed.

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Background: Brachial plexus anaesthesia has been an indispensable tool in the anaesthesiologist's armamentarium. Clinical studies have shown that levobupivacaine and ropivacaine have fewer adverse effects on the cardiovascular and central nervous system making them more advantageous in regional anaesthesia techniques. Less information is available regarding their comparable clinical data.

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Background And Aims: Orthognathic surgeries for maxillofacial deformities are commonly performed globally and are associated with significant blood loss. This can distort the surgical field and necessitate blood transfusion with its concomitant risks. We aimed to review if invasive intraarterial (IA) line monitoring and/or hypotensive anaesthesia is required for orthognathic surgeries, and their effects on intraoperative blood loss and transfusion requirements.

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Introduction: The efficacy of an intubation technique is crucial to the success of ventilation therapies. Intubating laryngeal mask airway (ILMA), Macintosh and McGrath techniques are yet to be evaluated thoroughly. Orotracheal intubations with ILMA, McGrath, and Macintosh laryngoscopes are compared based on haemodynamic changes, time taken for intubations, and success rate.

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Context: Cardiac anesthesiologists play a key role during the conduct of cardiopulmonary bypass (CPB). There are variations in the practice of CPB among extracorporeal technologists in India. Aims: The aim of this survey is to gather information on variations during the conduct of CPB in India.

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Background And Aims: Although both frailty and low cerebral oxygen saturation increase the risk of post-operative complications, their relationship is yet to be investigated. The purpose of this observational study was to investigate the association between frailty, intraoperative cerebral oxygen saturation and post-operative complications in elderly patients undergoing non-cardiac surgery.

Methods: After approval from the Institutional Review Board, 25 elderly patients (>65 years) undergoing non-cardiac major surgery were included in this study.

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Aneurysm is defined as a localized and permanent dilatation with an increase in normal diameter by more than 50%. It is more common in males and can affect up to 8% of elderly men. Smoking is the greatest risk factor for abdominal aortic aneurysm (AAA) and other risk factors include hypertension, hyperlipidemia, family history of aneurysms, inflammatory vasculitis, and trauma.

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Most infants with tracheomalacia do not need specific therapy as it usually resolves spontaneously by the age of 1-2 years. Severe forms of tracheomalacia characterized by recurrent respiratory infections require active treatment which includes chest physiotherapy, long term intubation or tracheostomy. Aortopexy seems to be the treatment of choice for secondary and even primary forms of severe tracheomalacia.

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Cardiac tamponade following central line in a neonate is rare and an uncommon situation; however, it is potentially reversible when it is diagnosed in time. We report a case of cardiac tamponade following central line insertion. A 10-day-old 2.

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Aims And Objective: We tested the hypothesis that use of levosimendan would be associated with better perioperative hemodynamics and cardiac function during off-pump coronary artery bypass grafting (OPCAB) in patients with good left ventricular function.

Materials And Methods: Thirty patients scheduled for OPCAB were randomized in a double-blind manner to receive either levosimendan 0.1 μg/kg/min or placebo after induction of general anesthesia.

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Aims And Objectives: We aimed to compare the hemodynamic effects of levosimendan and dobutamine in patients undergoing mitral valve surgery on cardiopulmonary bypass (CPB).

Materials And Methods: Sixty patients were divided into 2 groups of 30 each. Group-L patients received levosimendan 0.

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This study was designed to study the efficacy of intravenous dexmedetomidine for attenuation of cardiovascular responses to laryngoscopy and endotracheal intubation in patients with coronary artery disease. Sixty adult patients scheduled for elective off-pump coronary artery bypass surgery were randomly allocated to receive dexmedetomidine (0.5 mcg/kg) or normal saline 15 min before intubation.

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The clinical study was designed to evaluate and compare single preoperative dose of pregabalin to a placebo regarding hemodynamic responses to laryngoscopy and endotracheal intubation, to assess perioperative fentanyl requirement and any side-effects. It was a randomized, double-blind, placebo-controlled, parallel assignment, efficacy study. The study was done at a tertiary university hospital.

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Aim: To document the feasibility of early extubation and to know the effect of age, weight, and post-operative right ventricle/left ventricle ratio in early extubation in intracardiac repair for tetralogy of Fallot.

Materials And Methods: This is a prospective study of 76 consecutive patients undergoing intracardiac repair between January, 2010 and April, 2010. The patients were compared between duration of ventilation with age, weight, and post-operative left ventricle/right ventricle ratio.

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The study was done to detect the optimal site of left anterior descending (LAD) artery for grafting and for the assessment of geometrical and anatomical characteristics of left internal mammary artery (LIMA)-to-LAD artery anastomosis in elective off-pump coronary artery bypass grafting surgery. Fifteen consecutive patients who underwent coronary artery bypass graft (CABG) were included in the study. All the operations were performed by a single surgeon.

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Tracheal and esophageal compression is a well-recognized complication of aneurysms of the aortic arch. Most of the patients present with dysphagia and/or respiratory insufficiency. In the adult population a right-sided aortic arch is often asymptomatic unless aneurysmal disease develops.

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